The decision could have far-reaching implications for the protections and freedoms given to transgender women in the U.K.

Judges say the "concept of sex is binary" while adding that transgender people will still have protection against discrimination.

The decision by the Supreme Court that laws against sex-based discrimination should only apply to biological women will lead to a raft of changes. They are expected to include who can access single-sex NHS wards, which police officers can carry out strip searches, and who can join female teams in elite sport.